You can delete a network instance connection that is created on a transit router. After the connection is deleted, the network associated with the network instance connection cannot communicate with other networks through the transit router.

Prerequisites

  • If you want to delete a network instance connection from an Enterprise Edition transit router, make sure that the following requirements are met:
    • The network instance connection is not associated with a custom route table. For more information about how to disassociate a custom route table from a network instance connection, see Delete an associated forwarding correlation.
    • No route learning correlation is created for the network instance connection. For more information about how to delete a route learning correlation, see Delete a route learning correlation.
    • If you want to delete a virtual private cloud (VPC) connection, make sure that the route tables of the VPC do not contain a route entry whose next hop is the transit router. For more information about how to delete a route entry in a VPC, see Add and delete routes.
    • The route tables of the Enterprise Edition transit router do not contain a custom route entry whose next hop is the network instance connection. For more information about how to delete a custom route entry from the route table of a transit router, see Delete a custom route from a route table of an Enterprise Edition transit router.
    • The route tables of the Enterprise Edition transit router do not contain a custom route entry whose next hop is the network instance connection. You can delete routes by disassociating route tables from prefix lists. For more information, see Disassociate the route table of an Enterprise Edition transit router from a prefix list.
  • You can also follow the procedure described in this topic to delete a network instance connection from a Basic Edition transit router.

Delete a network instance connection

  1. Log on to the CEN console.
  2. On the Instances page, find the CEN instance that you want to manage and click the instance ID.
  3. Navigate to the Basic Settings > Transit Router tab, find the transit router that you want to manage based on the region of the network instance, and then click the ID of the transit router.
  4. On the Intra-region Connections tab, find the network instance connection that you want to delete and click Detach in the Actions column.
  5. In the Detach Network message, confirm the information about the network instance and click OK.

References